نتایج جستجو برای: biostratigraphic correlation

تعداد نتایج: 391148  

Journal: :Comptes Rendus Geoscience 2021

The Middle Triassic (Ladinian) deposits of the Catalan Basin (Spain) are essentially represented by extensive marine carbonate platforms developed in a rift tectonic setting. During Ladinian, regional sea-level drop led to significant paleogeographic reorganisation depocentres eastern Iberia producing relevant shift distribution sedimentary environments. To better calibrate age correlative conf...

2017
Kenneth G. Miller James D. Wright

We review examples of placement of select Cenozoic Global Boundary Stratotype Sections and Points (GSSP = “golden spikes”) from a geochemical and magnetostratigraphic perspective. Though biostratigraphy is the sine qua non for placing modern chronologic tools (high-resolution radiometric dates, magnetochronology, and astrochronology) into proper stratigraphic context, its use as the primary cor...

Journal: :The Paleontological Society Special Publications 1996

Journal: :Marine and Petroleum Geology 2021

A highly resolved record of stable carbon isotope values (?13C) the Late Cretaceous to Palaeogene (Cenomanian – Danian) was generated from ditch-cuttings material recovered Shearwater A9 hydrocarbon production well, Field, Central North Sea. The profile ?13C integrated with calcareous nannofossil and foraminifera biostratigraphy provide an stratigraphy for Chalk Group. Detailed correlation betw...

Journal: :MethodsX 2021

All studies focused on the evaluation of paleoecological variability over geological time must be linked to a specific age or interval, which can defined using different scales (biostratigraphic, chronostratigraphic, geochronological orbital). Therefore, integrated are essential allow comparisons data from locations and/or assess evolutionary and other events through time. Here we use new metho...

2017
Mathias Harzhauser Gudrun Daxner-Höck Margarita A. Erbajeva Paloma López-Guerrero Olivier Maridet Adriana Oliver Werner E. Piller Ursula B. Göhlich Reinhard Ziegler

The Taatsiin Gol Basin in Mongolia is a key area for understanding the evolution and dispersal of Central Asian mammal faunas during the Oligocene and early Miocene. After two decades of intense fieldwork, the area is extraordinarily well sampled and taxonomically well studied, yielding a large dataset of 19,042 specimens from 60 samples. The specimens represent 176 species-level and 99 genus-l...

2001
W. C. Clyde N. D. Sheldon P. L. Koch G. F. Gunnell W. S. Bartels

New paleomagnetic and stable isotopic results from the northeastern margin of the greater Green River Basin (South Pass, Wyoming) provide a re®ned geochronological context for the Wasatchian/Bridgerian Land Mammal Age boundary and suggest the existence of large amplitude Milankovich-scale carbon and oxygen isotopic oscillations in this area during the early Eocene. Analysis of 55 paleomagnetic ...

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